Providing oligomer moisture barrier in direct chill casting of aluminum-lithium alloy
US4607679A · kind A · utility
18Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1984 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Dec 6, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/07
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention involves a process for continuously casting a lithium-containing alloy by direct chill with a direct chill coolant and providing a moisture barrier liquid having a flash point higher than about 400.degree. F. to reduce water absorption in the coolant. The process in one aspect includes applying the moisture barrier liquid as a mold parting composition containing less than a varnish-film forming amount of fatty esters, fatty acids, or fatty alcohols. The process is particularly useful in the direct chill casting of aluminum-lithium alloy by direct chill with ethylene glycol coolant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.